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High-efficiency reflective liquid crystal display

  • US 6,317,189 B1
  • Filed: 12/29/1998
  • Issued: 11/13/2001
  • Est. Priority Date: 12/29/1998
  • Status: Expired due to Term
First Claim
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1. A reflective display, comprising:

  • a first substrate;

    a second substrate; and

    a light reflective medium formed between the first and second substrates, the light reflective medium reflects light at two or more intrinsic peak wavelengths, wherein the light reflective medium comprising a holographic polymer dispersed cholesteric liquid crystal material formed between the first and second substrates, the holographic polymer dispersed cholesteric liquid crystal material including;

    polymer layers; and

    cholesteric liquid crystal layers comprising a cholesteric liquid crystal material; and

    the holographic polymer dispersed cholesteric liquid crystal material reflects light at a first intrinsic peak wavelength and at a second intrinsic peak wavelength.

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